We report on our experimental work concerning a planar metamaterial exhibiting classical electromagnetically induced transparency (EIT). Using a structure with two mirrored split-ring resonators as the dark element and a cut wire as the radiative element, we demonstrate that an EIT-like resonance can be achieved without breaking the symmetry of the structure. The mirror symmetry of the metamaterial's structural element results in a selection rule inhibiting magnetic dipole radiation for the dark element, and the increased quality factor leads to low absorption (<10%) and large group index (of the order of 30).
L. Zhang et al., "Large Group Delay in a Microwave Metamaterial Analog of Electromagnetically Induced Transparency," Applied Physics Letters, vol. 97, no. 24, pp. 241904-1-241904-3, American Physical Society (APS), Dec 2010.
The definitive version is available at http://dx.doi.org/10.1063/1.3525925
Keywords and Phrases
Electromagnetically-induced transparency; Experimental works; Large groups; Magnetic dipole; Mirror symmetry; Quality factors; Selection Rules; Split-ring resonator; Structural elements; Diagnostic radiography; Electric impedance tomography; Group delay; Metamaterials; Transparency; Quantum optics
International Standard Serial Number (ISSN)
Article - Journal
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